Hyundai Accent: Heated Oxygen Sensor (HO2S). Description and Operation

Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. The sensor output voltage varies in accordance with the air/fuel ratio.

The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater which is controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

Installation

• Install the component with the specified torques. • ...

Heated Oxygen Sensor (HO2S). Specifications

Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2 ...

See also:

Inspection
1. Check the components for damage or deformation. 2. Compress and extend the piston and check that there is no abnormal resistance or unus ...

Inspection
1. Turn ignition switch OFF. 2. Disconnect the oil temperature sensor connector. 3. Measure resistance between ...

Components and Components Location
Components 1. Steering wheel 2. Steering column & EPS unit assembly 3. Universal joint assembly 4. Steering gear box ...